Add short name -v for verbose option

docs/spec/options/hurl/verbose.option

@@ -1,5 +1,6 @@
 name: verbose
 long: verbose
+short: v
 help: Turn on verbose
 ---
 Turn on verbose output on standard error stream.

integration/hurl/tests_ok/help.out.pattern

@@ -110,7 +110,7 @@ Options:
           Define a variable
       --variables-file <FILE>
           Define a properties file in which you define your variables
-      --verbose
+  -v, --verbose
           Turn on verbose
       --very-verbose
           Turn on verbose output, including HTTP response and libcurl logs

packages/hurl/src/cli/options/commands.rs

@@ -459,6 +459,7 @@ pub fn variables_file() -> clap::Arg {
 pub fn verbose() -> clap::Arg {
     clap::Arg::new("verbose")
         .long("verbose")
+        .short('v')
         .help("Turn on verbose")
         .action(ArgAction::SetTrue)
 }